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Enable VM consoles in vSphere Client through a NAT device

More Information: 

I originally found the solution on VMWare's forums here. This thread provides more information about the issue. Apparently this is expected to be fixed a future update.

Solution: 

Add the following line to /etc/vmware/config:

vmauthd.server.alwaysProxy="TRUE"

If the NAT device is also doing firewalling, make sure that port 903/tcp is open for traffic from your local IP to the VMWare server and vice versa.

Problem: 

When you connect to a VMWare server behind a NAT device via the vSphere client, you are unable to get console access for virtual machines. The vSphere client returns an error like "Unable to connect to the MKS: Failed to connect to server x.x.x.x:903."

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